The Leuckart reaction is the chemical reaction that converts aldehydes or ketones to amines by reductive amination in the presence of heat. The reaction, named after Rudolf Leuckart, proceeds via two mechanisms: one using ammonium formate and the other using formamide as the reducing agent. It requires high temperatures, usually between 120 and 130 °C, although under the presence of formamide, the temperature can be greater than 165 °C. The reaction works best using ammonium formate and the general reaction can be seen below.